diff --git a/README.md b/README.md
index 00b96811..6e5bb46b 100644
--- a/README.md
+++ b/README.md
@@ -106,6 +106,9 @@ Method                                                   | Description
 `isInstanceOf($value, $class, $message = '')`            | Check that a value is an `instanceof` a class
 `isInstanceOfAny($value, array $classes, $message = '')` | Check that a value is an `instanceof` a at least one class on the array of classes
 `notInstanceOf($value, $class, $message = '')`           | Check that a value is not an `instanceof` a class
+`isAOf($value, $class, $message = '')`                   | Check that a value is of the class or has one of its parents
+`isAnyOf($value, array $classes, $message = '')`         | Check that a value a at least one of the class or has one of its parents
+`isNotA($value, $class, $message = '')`                  | Check that a value is not of the class or has not one of its parents
 `isArrayAccessible($value, $message = '')`               | Check that a value can be accessed as an array
 `uniqueValues($values, $message = '')`                   | Check that the given array contains unique values
 
diff --git a/src/Assert.php b/src/Assert.php
index 81341952..aa7653e3 100644
--- a/src/Assert.php
+++ b/src/Assert.php
@@ -45,6 +45,9 @@
  * @method static void nullOrIsInstanceOf($value, $class, $message = '')
  * @method static void nullOrNotInstanceOf($value, $class, $message = '')
  * @method static void nullOrIsInstanceOfAny($value, $classes, $message = '')
+ * @method static void nullOrIsAOf($value, $classes, $message = '')
+ * @method static void nullOrIsAnyOf($value, $classes, $message = '')
+ * @method static void nullOrIsNotA($value, $classes, $message = '')
  * @method static void nullOrIsEmpty($value, $message = '')
  * @method static void nullOrNotEmpty($value, $message = '')
  * @method static void nullOrTrue($value, $message = '')
@@ -129,6 +132,9 @@
  * @method static void allIsInstanceOf($values, $class, $message = '')
  * @method static void allNotInstanceOf($values, $class, $message = '')
  * @method static void allIsInstanceOfAny($values, $classes, $message = '')
+ * @method static void allIsAOf($values, $class, $message = '')
+ * @method static void allIsAnyOf($values, $class, $message = '')
+ * @method static void allIsNotA($values, $class, $message = '')
  * @method static void allNull($values, $message = '')
  * @method static void allNotNull($values, $message = '')
  * @method static void allIsEmpty($values, $message = '')
@@ -590,6 +596,70 @@ public static function isInstanceOfAny($value, array $classes, $message = '')
         ));
     }
 
+    /**
+     * @param object|string $value
+     * @param string        $class
+     * @param string        $message
+     *
+     * @throws InvalidArgumentException
+     */
+    public static function isAOf($value, $class, $message = '')
+    {
+        static::string($class, 'Expected class as a string. Got: %s');
+
+        if (!\is_a($value, $class, \is_string($value))) {
+            static::reportInvalidArgument(sprintf(
+                $message ?: 'Expected an instance of this class or to this class among his parents %2$s. Got: %s',
+                static::typeToString($value),
+                $class
+            ));
+        }
+    }
+
+    /**
+     * @param object|string $value
+     * @param string        $class
+     * @param string        $message
+     *
+     * @throws InvalidArgumentException
+     */
+    public static function isNotA($value, $class, $message = '')
+    {
+        static::string($class, 'Expected class as a string. Got: %s');
+
+        if (\is_a($value, $class, \is_string($value))) {
+            static::reportInvalidArgument(sprintf(
+                $message ?: 'Expected an instance of this class or to this class among his parents other than %2$s. Got: %s',
+                static::typeToString($value),
+                $class
+            ));
+        }
+    }
+
+    /**
+     * @param object|string $value
+     * @param string[]      $classes
+     * @param string        $message
+     *
+     * @throws InvalidArgumentException
+     */
+    public static function isAnyOf($value, array $classes, $message = '')
+    {
+        foreach ($classes as $class) {
+            static::string($class, 'Expected class as a string. Got: %s');
+
+            if (\is_a($value, $class, \is_string($value))) {
+                return;
+            }
+        }
+
+        static::reportInvalidArgument(sprintf(
+            $message ?: 'Expected an any of instance of this class or to this class among his parents other than %2$s. Got: %s',
+            static::typeToString($value),
+            \implode(', ', \array_map(array('static', 'valueToString'), $classes))
+        ));
+    }
+
     /**
      * @psalm-assert empty $value
      *
diff --git a/tests/AssertTest.php b/tests/AssertTest.php
index acf31164..ee850229 100644
--- a/tests/AssertTest.php
+++ b/tests/AssertTest.php
@@ -144,6 +144,22 @@ public function getTests()
             array('isInstanceOfAny', array(new Exception(), array('ArrayAccess', 'Countable')), false),
             array('isInstanceOfAny', array(123, array('stdClass')), false),
             array('isInstanceOfAny', array(array(), array('stdClass')), false),
+            array('isAOf', array('stdClass', 'stdClass'), true),
+            array('isAOf', array('stdClass', 123), false),
+            array('isAOf', array('Iterator', 'ArrayIterator'), false),
+            array('isAOf', array(123, 'Iterator'), false),
+            array('isAOf', array(array(), 'Iterator'), false),
+            array('isAnyOf', array('ArrayIterator', array('Iterator', 'ArrayAccess')), true),
+            array('isAnyOf', array('ArrayIterator', array(123)), false),
+            array('isAnyOf', array('Exception', array('Exception', 'Countable')), true),
+            array('isAnyOf', array('Exception', array('ArrayAccess', 'Countable')), false),
+            array('isAnyOf', array(123, array('stdClass')), false),
+            array('isAnyOf', array(array(), array('stdClass')), false),
+            array('isNotA', array('stdClass', 'stdClass'), false),
+            array('isNotA', array('stdClass', 123), false),
+            array('isNotA', array('Iterator', 'ArrayIterator'), true),
+            array('isNotA', array(123, 'Iterator'), true),
+            array('isNotA', array(array(), 'Iterator'), true),
             array('true', array(true), true),
             array('true', array(false), false),
             array('true', array(1), false),